Explanation of the Preliminary Monthly Climate Data (F6) Product

These data are preliminary and have not undergone final quality control by the National Climatic Data Center (NCDC). Therefore, these data are subject to revision. Final and certified climate data can be accessed at the NCDC - http://www.ncdc.noaa.gov.

WFO Monthly/Daily Climate Data


000
CXUS53 KDLH 010625
CF6DLH
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   DULUTH MN
                                          MONTH:     MAY
                                          YEAR:      2009
                                          LATITUDE:   46 49 N
                                          LONGITUDE:  92 11 W

  TEMPERATURE IN F:       :PCPN:    SNOW:  WIND      :SUNSHINE: SKY     :PK WND
================================================================================
1   2   3   4   5  6A  6B    7    8   9   10  11  12  13   14  15   16   17  18
                                     12Z  AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD  WTR  SNW DPTH SPD SPD DIR MIN PSBL S-S WX    SPD DR
================================================================================

 1  52  36  44  -2  21   0    T  0.0    0 12.7 24 290   M    M   6        31 280
 2  56  35  46  -1  19   0    T  0.0    0 10.4 23 290   M    M   7        31 280
 3  61  34  48   1  17   0 0.00  0.0    0  9.3 25 300   M    M   2        31 290
 4  63  34  49   1  16   0 0.00  0.0    0  7.8 21  90   M    M   0        26  80
 5  64  41  53   5  12   0 0.42  0.0    0 10.0 18 300   M    M   6 13     25 300
 6  74  44  59  11   6   0    T  0.0    0  7.4 22 280   M    M   5 1      29 280
 7  71  44  58   9   7   0 0.00  0.0    0 14.8 31 270   M    M   1        40 250
 8  59  40  50   1  15   0    T  0.0    0 10.4 17 330   M    M   5        23 330
 9  47  34  41  -9  24   0 0.10  0.0    0  5.5 14  70   M    M   9 18     18  70
10  58  36  47  -3  18   0 0.01  0.0    0  5.7 16 280   M    M   7        26 300
11  62  32  47  -3  18   0    T  0.0    0  5.8 18 230   M    M   3        25 220
12  62  44  53   2  12   0 0.03  0.0    0 11.1 25 180   M    M   7 8      32 190
13  73  47  60   9   5   0 0.04  0.0    0 19.7 30 260   M    M   7 1      39 260
14  51  34  43  -8  22   0 0.07    T    0 14.2 31 310   M    M   6 18     41 310
15  56  35  46  -6  19   0 0.53  0.0    0 13.9 29 290   M    M   5 1      39 300
16  50  32  41 -11  24   0    T    T    0 18.8 32 290   M    M   5 18     45 280
17  64  34  49  -3  16   0 0.00  0.0    0  9.0 18 270   M    M   2        25 250
18  74  43  59   6   6   0 0.06  0.0    0 15.1 25 240   M    M   2        33 210
19  46  34  40 -13  25   0 0.02  0.0    0 19.8 31  90   M    M   4 1      39 110
20  88  34  61   8   4   0    T  0.0    0 15.0 38 210   M    M   3 128    48 210
21  67  45  56   2   9   0 0.01  0.0    0 11.4 24 310   M    M   5        31 280
22  66  35  51  -3  14   0 0.00  0.0    0  7.7 17 340   M    M   3        26 340
23  64  42  53  -1  12   0 0.00  0.0    0  7.9 18 340   M    M   3        24 340
24  64  40  52  -3  13   0 0.00  0.0    0  7.2 15 120   M    M   0        18 110
25  64  46  55   0  10   0 0.00  0.0    0 11.9 23  90   M    M   3        30 100
26  60  44  52  -3  13   0 0.04  0.0    0  8.0 18  90   M    M   8 18     23 100
27  52  40  46  -9  19   0    T  0.0    0 10.9 21  60   M    M   8 128    30  60
28  76  36  56   0   9   0 0.00  0.0    0  9.4 21 310   M    M   1        28 310
29  67  42  55  -1  10   0 0.04  0.0    0  8.9 28 280   M    M   2 8      38 290
30  61  39  50  -6  15   0 0.00  0.0    0 12.8 25 300   M    M   1        37 290
31  50  32  41 -15  24   0 0.76  0.0    0  7.0 25 150   M    M   6 13     30 150
================================================================================
SM 1922 1188       454   0  2.13    T    339.5          M      132
================================================================================
AV 62.0 38.3                              11.0 FASTST   M    M   4    MAX(MPH)
                                 MISC ---->  # 38 210               # 48  210
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2

                                          STATION:  DULUTH MN
                                          MONTH:    MAY
                                          YEAR:     2009
                                          LATITUDE:   46 49 N
                                          LONGITUDE:  92 11 W

[TEMPERATURE DATA]      [PRECIPITATION DATA]       SYMBOLS USED IN COLUMN 16

AVERAGE MONTHLY: 50.2   TOTAL FOR MONTH:   2.13    1 = FOG OR MIST
DPTR FM NORMAL:  -1.6   DPTR FM NORMAL:   -0.82    2 = FOG REDUCING VISIBILITY
HIGHEST:    88 ON 20    GRTST 24HR  0.76 ON 31-31      TO 1/4 MILE OR LESS
LOWEST:     32 ON 31,16                            3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:    T          5 = HAIL
                        GRTST 24HR    T  ON 16-16  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   0           7 = DUSTSTORM OR SANDSTORM:
                                                       VSBY 1/2 MILE OR LESS
                                                   8 = SMOKE OR HAZE
[NO. OF DAYS WITH]      [WEATHER - DAYS WITH]      9 = BLOWING SNOW
                                                   X = TORNADO
MAX 32 OR BELOW:   0    0.01 INCH OR MORE:  13
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   4
MIN 32 OR BELOW:   3    0.50 INCH OR MORE:   2
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   454    CLEAR  (SCALE 0-3)  13
DPTR FM NORMAL    33    PTCLDY (SCALE 4-7)  17
TOTAL FM JUL 1  9633    CLOUDY (SCALE 8-10)  1
DPTR FM NORMAL    89

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL    -7    [PRESSURE DATA]
TOTAL FM JAN 1     0    HIGHEST SLP M ON M
DPTR FM NORMAL    -7    LOWEST  SLP 29.42 ON 13

[REMARKS]
#FINAL-05-09#